The largest value of a for which the cir...

The largest value of a for which the circle `x^2 +y^2 = a^2` falls totally in the interior of the parabola `y^2= 4(x + 4)` is (A) `4sqrt3` (B) 4 (C) `4sqrt6/7` (D) `2sqrt3`

A

`4sqrt3`

B

4

C

`(4sqrt6)/7`

D

`2sqrt3`

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The correct Answer is:

D

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